A person , when_________，can often do what is normally beyond his ability.
| A．challenged | B．challenges |
| C．challenging | D．to challenge |
The audience was _____ very young children so there was a lot of noise while the concert was going on.
| A．made up from | B．made up for | C．made up into | D．made up of |
The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
| A．that | B．it | C．this | D．him |
She ______his number in the phone book to make sure that she had got it right.
| A．looked up | B．looked for | C．picked out | D．picked up |
You said boys were cleverer than girls. That is _______ I disagree.
| A．what | B．where | C．which | D．why |
With the rapid growth of population, the city______ in all directions in the past five years.
| A．spreads | B．has spread | C．spread | D．had spread |